Sharp MX-3115N Strange issue

**Madnhain** · 10-12-2015

Good day!
Ok, so I've got a low-count Machine that a green tech did something to. We don't know what he did (he is no longer with us). The original error was an E7-11, parts we know have been replaced (by a certified tech) include Lamb Base, CCD, CCD Ribbon Cable, all pertinent adjustments have been made and Firmware is current.

Internal Prints are fine, it's only from adf and OC Glass that the images are bad.
I have attached 3 documents, a 22-6, 8 1/2 x 11 from the ADF and 11x17 from the Glass.
Attachment 30922
11x17 Glass.pdf
Attachment 30924

The first images on the 8 1/2 x 11 are self prints.
the subsequent images are "blurred" on the rear 1/4 ish of the page. and the image is skewed maybe 5mm.

What am I missing?

Ideas would be AWESOME! Thanks in advance

**blackcat4866** · 10-12-2015

Have you ever heard of a Binder Minder?
If you can find the patience to listen through my story, maybe it will give you an idea.

We sold two Aplyon series with the dreaded Binder Minder aftermarket option, and this is what happened. Well, of course you have to install the thing first. A Binder Minder is a special glass and platen you can theoretically install on any MFP, so the binding of a book can lay across the corner of the scanner, and not damage the book. I brought in my drill, to drill out the spot welds holding the left side of the scanner together, and removed a chunk of the scanner frame, per instructions. Then I installed the additional stick on mirrors provided. With the whole thing installed, we soon discovered that we had completely lost the focus of the scanner, and got a very pretty rainbow of colors, ending in full 0/0/0/100 black at the trail edge.

I then spent the next three days fiddling with the thing trying to get the focus back. The problem was that the self stick mirrors were not altogether that securely attached, so when I started to get close to a reasonable focus, the smallest bump would send you back to the beginning. I got the best result by tie-wrapping the new mirrors over the old, and pulling them as tight as I could. The focus at the trailing edge was still not that great, but the rainbow of beautiful colors didn't start until about 10" from the leading edge, so you could get a decent LTR sized copy or scan. Even then, the machine would not calibrate properly. The only way to get a calibration was to remove all the aftermarket junk, and reassemble the original copier, then put the junk back on. Oops, did I say junk? I meant to say optional device.

The point of this whole long-winded story is that my scans looked a lot like yours. Something is out of focus, an you probably won't find a procedure in your service manual. These adjustments are considered factory presets, nowadays.

I'm going to make some guesses. My guess is that the CCD focus adjustment has been moved. Not on the CCD itself, but the mount. Before you touch that though, I would check each mirror to confirm that the leaf spring is holding it properly. Then I would roll the scanner through it's full 17" of travel, and measure to confirm that light source #1 (lamp and first mirror), light source #2 & #3 (2nd and 3rd mirrors) are approximately equidistant at the front and back, and to the scanner frame. They probably will be.

Then ... note if there are any scrape marks where screws have been moved on the CCD mount. You could get lucky and find matching paint marks or scrape marks on the mounting slots. Then I would use very very small adjustments of the CCD mounting plate to try to improve the focus. This is entirely trial and error. If I were to guess, I would say that the front edge of the CCD is too high or low.

This is why they say not to turn those painted screws. Let us know how it goes. =^..^=

**faxman28** · 10-13-2015

check adj 6 and 8 in chapter 4 of service manual. if the ccd base (part with the do not touch screws in adj 8) wasn't moved, there are 2 adjusting screws with leaf springs that adjusts the height and tilt of ccd. otherwise you will have to replace complete scanner assembly.

**Madnhain** · 10-13-2015

Thank you for the suggestions. I have spent long hours manually adjusting CCD in the past. Not exactly the way I like to spend my afternoons. But I do agree, something is out of whack. I'll certainly keep y'all in the loop!

**MdangerP** · 10-14-2015

I had a similar problem where my 22-6 would come out ok but half the page was missing off prints/copies. Threw me for a loop but it ended up being the lsu shutter solenoid. Maybe check all the transfer gears as well. Does it error out doing a 46-74?

**Madnhain** · 10-22-2015

Update Time!
Ok so I had my tech adjust the CCD. After a while of tinkering, the image was back to normal but slightly skewed. a few more adjustments and the quality was improved enough to move forward.

Thank you for the guidance friends!